I want my money back

Where do I start. On the 20 April 2 ********** R820 shows as a cheque card purchase from Telkom with a reference number that reflects my account I have with them. I paid that R820 via the telkom app on the 16th April 2019. (documentation available for review) After phone calls to both my bank and telkom this issue was not resolved. According to my bank (Standard Bank) Telkom banked the money late, and according to Telkom (Desmond-consultant) this is not how they do business...Irrespective I am R820 short. So Standard bank cannot reverse it...and I am still awaiting answers from telkom, whom i sent and email to ********** yesterday morning. Customer service really sucks at telkom when it comes to feedback and their "investigations" I am not bargaining on a call back because I see that they DO NOT RESPOND.